Improved daguerreotype-plate holder



UNITED STATES PATENT OFFICE.

JOSEPH HILL, OF SKANEATELES, NEW YORK.

IMPROVED DAGUERREOTYPE-PLATE HOLDER.

Specification forming part of Letters Patent No. 11,565, dated August 22, 1854.

T0 a/ZZ whom il? m/ay concern:

Be it known that l, JOSEPH HILL, ot' Skaneateles, in the county of Onondaga, State of New York, have invented a new and Improved Mode of Confining or Holding Daguerreotype-Plates while in the Act of Burnishing or Polishingtheln; andI do hereby declare that the following is a full and exact description.

The nature of my invention consists of pro- Viding blocks ot' a width and length equal to any size of daguerreotype-plates used.

The drawing liled herewith, signed by-me, contains views of the block and its several parts, as follows:

A represents the block with the plate confined on it, ready for burnishing or polishing.

B represents the block extended to receive the plates, showing the separationA of the block at E, the springs D D,'and doWel-pins C C. The retaining force is caused by the springs D D, made of india-rubber, guttapercha, composition, or any metallic substance fastened firmly to the separated p01'- tions of the block, and when unrestrained and at rest by their inward pressure keeping the separated portions of the block closely together at E. The daguerreotype-plates are confined to the blocks by metallic plates being fastened on the edges of the blocks, as shown at F, and rising to a proper height above the surface of the block, so as to catch the edge of the daguerreotype plates and at the same time not to come in contact with the bult-wheel or polishing-surface. The edges of the block are slightly beveled to assist in retaining the daguerreotype plates. The dowel-pins C O are used to keep the separated portions ot' the blocks in a true position to each other. A

What I claim as my invention, and desire to secure by Letters Patent, is

The application of the inward pressure by means of the springs by their force retaining the daguerreotype-plates to the block by the contact of the daguerreotype-plates with the plates on the edges of the block.

It is understood that the daguerreotypeplates may be conined by their ends as Well as sides by the same principles. Blocks may be made of any substance.

JOSEPH HILL. Witnesses:

W. H. JEWETT, H. L. BEAN. 

